Swim in an Ancient Mountain of Baking Soda
Pamukkale in Southwestern Turkey was once a resort town for ancient Greeks and Romans, with plenty of ruins of Hieropolis to prove it, thanks to its natural thermal springs and a massive, cascading mountain of baking soda, aka, the "Cotton Castle." The chemical reaction of the sodium bicarbonate and the spring water creates aqua blue pools of warm water, descending in tiers down the mountainside. You can play in the pools 24/7, lounge in the spring spa, and take in sunset from up there.
